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Explain the difference between binaryinstruction and binaryaccinstruction

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Developers may add new instructions in wrong place in the future
if they don't know the difference between binaryinstruction and
binaryaccinstruction.
This commit is contained in:
Homer Hsing 2012-09-18 13:25:53 +08:00 committed by Damien Lespiau
parent 375d1fd7b2
commit 74383f4db4
1 changed files with 4 additions and 0 deletions
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4
assembler/src/gram.y
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@ -367,6 +367,8 @@ instrseq: instrseq pragma
;
/* 1.4.1: Instruction groups */
// binaryinstruction: Source operands cannot be accumulators
// binaryaccinstruction: Source operands can be accumulators
instruction: unaryinstruction
| binaryinstruction
| binaryaccinstruction
@ -417,6 +419,7 @@ unaryop: MOV | FRC | RNDU | RNDD | RNDE | RNDZ | NOT | LZD | BFREV | CBIT
| F16TO32 | F32TO16 | FBH | FBL
;
// Source operands cannot be accumulators
binaryinstruction:
predicate binaryop conditionalmodifier saturate execsize
dst src srcimm instoptions
@ -454,6 +457,7 @@ binaryinstruction:
binaryop: MUL | MAC | MACH | LINE | SAD2 | SADA2 | DP4 | DPH | DP3 | DP2 | SUBB
;
// Source operands can be accumulators
binaryaccinstruction:
predicate binaryaccop conditionalmodifier saturate execsize
dst srcacc srcimm instoptions